1、Section AUnit 2 Topic2All these problems are very serious Learning Aims:1.学习并掌握本课的新单词和短语；2.初步感知不定代词的用法；3.谈论树木的重要性，培养我们的环保意识。Task2 Learn new words1.sand snd n.沙2.sandstorm sndst:m n.沙暴3.change into 转换成，变成（turn into)4.desert dezt n.沙漠v.舍弃，遗弃5.human being 人6.although :lu conj.虽然，尽管，即使7.reduce rdju:s v.
2、减少，减轻Task2 Ask and answer1._ snd n.沙2.sandstorm sndst:m n._ 3._ 转换成，变成（turn into)4.desert n._v._5._ 人6._ conj.虽然，尽管，即使7.reduce rdju:s v._sand沙暴change into沙漠舍弃，遗弃human being减少，减轻althoughmany treescut down Task2 Use the new words 快速抢答，你准备好了吗？1.H_have cut down many trees.Human beingsforests gonewash th
3、e earth away2.The forests have gone and the rain washes the earth away.Task2 Use the new words快速抢答，你准备好了吗？3.A lot of rich land has _ desert because people have cut down too many trees.Task2 Use the new words 快速抢答，你准备好了吗？changed into快速抢答，你准备好了吗？Task2 Use the new words4.As a result,s_ come into being.
4、sandstormsTask3 Do you know how sandstorms come into being?Number the pictures and talk about the sandstorm in groups.()()()()()()()()()()()()415362wash the earth awaymany treeschange into desertforests gonesandstorms come into beingcut down trees1.What causes these sandstorms?A.cut down too many tr
5、eesB.the bad weatherC.the Great Green Wall2.What are they talking about?A.different types of sandstorms B.the reasons for sandstorms C.sandstorms in different cities Task4 Listen to 1a and choose the best answer.AB Task5 Read 1a and complete trees functions.A.Trees can stop the wind from blowing the
6、 earth away.B.A lot of water can be saved by forests.C.They can also stop the water from washing the earth away.Trees functionsTask 7Role-play（熟读&角色扮演）Task 8 Discuss and find the useful phrases and sentences.讨论分工及展示要求：1.People have cut down such a large number of trees that the land _ desert.2.There
7、 are fewer trees left,so the wind always _the earth _.3.Air pollution has become a serious problem,so we must_ to reduce it.4.we should try our best to _ people _ cutting down the trees.5.In the future,human beings can protect the trees well._,animals will live a happy life in the forest.as a result
8、,change into,do something,stopfrom,blowawayhas changed intoblows awaydo somethingstopfromAs a resultTask9 check in class Complete the sentences with the correct forms of the given phrases in the box.直击中招1.（阜新）-_ interesting book!Could you lend it to me?-No problem.A.What B.What a C.What an D.How2.-I
9、s there _ important in todays newspaper?-Nothing special.A.everything B.nothing C.something D.anything ExerciseCD直击中招3.We lost the basketball game,_ everyone played well.A.because B.although C.if D.so4.-Wang Mei had an accident on the way to school.She fell off her bike and got badly hurt.-_.A.Thats
10、 nothing serious.B.It certainly was.C.Im sorry for it.D.Im sorry to hear that.ExerciseBDWe learn:1.Some words:2.Some phrases:3.Some sentences:We can:Summary What have we learned?sand,althoughchange into,human being,stop sb./sth.from doing sth.(1)As a result,a lot of rich land has changed into desert.(2)Trees can stop the wind from blowing the earth away.1.Talk about the sandstorm and its harm.2.Talk about the importance of trees.HomeworkWrite a passage about how sandstorm comes into being.Thank you!
